Anyway, degree confluence 53°N, 9°E is just around the corner and since I had a bit of spare time today I paid it a visit.
The ride with the singlespeed was lovely. The confluence is located just south of Achim, a small town just 20km east of Bremen, inside a grain field. Accidentally, I found a geocache there, too. On the way back I practiced following cycle path signs. ;)
According to DCP, 53°N, 9°E has been visited a couple of times. I plan to attempt a couple of first-time confluence visits during my upcoming summer trip, though.